> For the 2006 Mar 29 solar eclipse I get the magnitude 1.0260, while here:
> http://sunearth.gsfc.nasa.gov/eclipse/OH/image1/SE2006Mar29-Fig2.GIF
> there is 1.0515.

> In that site
> http://sunearth.gsfc.nasa.gov/eclipse/SEcat/SEcatkey.html
> it is said that: "Eclipse magnitude is the fraction of the Sun's diameter
> obscured by the Moon."
> which is clearly wrong because with that definition the maximum magnitude
> would be 1.

> In my program I used the formula:
> G= (Sl + Ss - d) / 2 / Ss
> where Sl and Ss are the Moon and Sun semidiameters and d is the distance
> between the center of the Sun and of the Moon.

> With my prog I get the NASA's magnitude when I do Sl/Ss which is 1,0521.

> Is there any standard definition for the magnitude?

> Thanks
> Cristiano